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  <title>打开一个到服务器的持久化连接</title>
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  <div id="layout-content"><div id="memcache.pconnect" class="refentry">
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  <h1 class="refname">Memcache::pconnect</h1>
  <p class="verinfo">(PECL memcache &gt;= 0.4.0)</p><p class="refpurpose"><span class="refname">Memcache::pconnect</span> &mdash; <span class="dc-title">打开一个到服务器的持久化连接</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-memcache.pconnect-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>Memcache::pconnect</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$host</code></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$port</code><span class="initializer"> = ?</span></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$timeout</code><span class="initializer"> = ?</span></span>): <span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span></div>


  <p class="para rdfs-comment">
   <span class="function"><strong>Memcache::pconnect()</strong></span>和
   <span class="function"><a href="memcache.connect.html" class="function">Memcache::connect()</a></span>非常类似，不同点在于这里建立的连接是持久化的。
   这个连接不会在脚本执行结束后或者<span class="function"><a href="memcache.close.html" class="function">Memcache::close()</a></span>被调用后关闭。
   同样你也可以使用函数<span class="function"><strong>memcache_pconnect()</strong></span>。
  </p>

 </div>


 <div class="refsect1 parameters" id="refsect1-memcache.pconnect-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">host</code></dt>

     <dd>

      <p class="para">
      服务端监听的主机地址。这个参数还可以指定为其他传输方式比如<code class="literal">unix:///path/to/memcached.sock</code>
      来使用Unix域套接字，使用这种方式<code class="parameter">port</code>参数必须设置为<code class="literal">0</code>。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">port</code></dt>

     <dd>

      <p class="para">
      服务端监听的端口号。使用Unix域套接字的时候需要将这个参数设置为<code class="literal">0</code>。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">timeout</code></dt>

     <dd>

      <p class="para">
       连接持续（超时）时间，单位秒。默认值1秒，修改此值之前请三思，过长的连接持续时间可能会导致失去所有的缓存优势。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-memcache.pconnect-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回一个 Memcache 对象 或者在失败时返回 <strong><code>false</code></strong>.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-memcache.pconnect-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4372">
    <p><strong>示例 #1 <span class="function"><strong>Memcache::pconnect()</strong></span>示例</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #FF8000">/*&nbsp;procedural&nbsp;API&nbsp;*/<br /></span><span style="color: #0000BB">$memcache_obj&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">memcache_pconnect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;OO&nbsp;API&nbsp;*/<br /><br /></span><span style="color: #0000BB">$memcache_obj&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">Memcache</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">pconnect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-memcache.pconnect-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="memcache.connect.html" class="function" rel="rdfs-seeAlso">Memcache::connect()</a> - 打开一个memcached服务端连接</span></li>
   </ul>
  </p>
 </div>


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